Rolling-mill.



J. KENNEDY.

ROLLING MILL. I APPLICATION nuzo AUG.24, 1911.

Patented N 0v. 5,1918.

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ROLLING MILL.

APPLICATION FILED AUG-24,19II.

1,284, 1 5. Patented Nov. 5, 1918.

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ROLLING MILL.

APPLICATION FILED AUG-24. 1911.

Patented Nov. 5, 1918.

12 SHEETS-SHEET 3.

WITNESSES J. KENNEDY.

ROLLING MILL.

APPLICATION FILD $.24. I917.

Patented Nov. 5, 1918.

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ROLLING MILL.

APPLICATION FILED AUG.24.1917.

Patented Nov. 5, 1918.

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ROLLING MILL.

APPLICATION FILED A.UG.24. I917.

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ROLUNG MILL.

APPLICATXON FILED AUG. 24, 191 7.

Patented Nov. 1918.

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ROLLING MILL.

mwucmore FILED AuG.24. 1917.

Patented Nov. 5, 1918.

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WITNESSES JQMKiuQiM/O J. KENNEDY.

ROLLING MILL.

APPLICAJION FILED AUG.24. I917.

Patented Nov. 5, 1918.

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ROLLING MILL. APPLICATION FILED 1514,1917.

Patented Nov. 5,1918.

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[ 3 WITNESSES JULIAN KENNEDY, 0F PITTSBURGH,

PENNSYLVANIA.

ROLLING-MILL.

nannies.

Specification of Letters Patent.

Patented Nov. 5, 1918.

Original application filed April 21, 1916, SerialNo. 82,614. Divided andthis application filed August 2a,

' 1917. Serial No. 187,954.

To all whom it may concern."

Be it known that I, JULIAN KENNEDY, a citizen of the United States,residing at Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement inRolling-Mills, of which the following is af-ull, clear, and exactdescription, reference being-had to the accompanying drawings, formingpart of this specification, in which Figure 1 is a plan view of arolling mill embodying my invention.

Fig. 2 is a view of the same partly in section and partly in sideelevation.

Fig. 3 is an end view of .a portion of the mill.

Fig. 4' is a side elevation on a larger scale of a portion of the mill.

Fig. 5 is a plan view-0n a larger scale of a portion of the mill;

Fig. dis a view partly in end elevation and partly in vertical sectionshowing the rolls and their housings.

Fig. 7 is a view partly in vertical section and partly in side elevationof the'rolls and their housings.

Fig. 8 is a side elevation of another portion of the mill.

Figs. 9 and 10 are sectional views taken respectively on the lines IXIXand XX of Fig. 8.

Fig. 11 is a transverse section through the roll able, the manipulatorguides, etc.;

Fig. 12 is a detail view showing partly in section and partly inelevation someof the parts shown in Fig. 11.

Figs. 13 and 14 are fragmentary plan views or portions of one of theroll tables;

Fig. 15 is a sectional elevation showing a portion of the table andmanipulator-ad tuating mechanisms.

Fig. 16 is a side elevationof head block removed.

Fig. 17 is a section on the XVII of Fig. 16.

Fig. 18 is an end elevation of the cylinders for operating the rollspindles.

Fig. 19 is a'section on the line XIXXIX of Fig. 18.

Fig. 20 is a section on the line XX-XX of Fig. 19.

Fig. 21 is a plan View of a portion of the the housing line xvii-.-

. table and manipulator-actuating mechanismS; and

Fig. 22 is a side elevation of the same.

with the table and also capable of certain relative movements withrespect thereto.

The invention also has reference to various other minor. features of themill, as will hereinafter more fully appear.

Referring to'the accompanying drawings, in which Ihave shown thepreferred embodiment of my invention, the numeral 2 designates theendhousings of a three-high mill, 3 the upper roll therefor, 4 themiddle roll, and 5 the lower roll. The middle roll may be movedvertically by any suitable means, such as the cylinders 6, having theirplunger-s connected to the lever' arms 7, which carry the bearings forthis roll. The details of this mechanism form no part of the presentinvention, since any suitable means may be provided for shifting themid- -dle roll.

The numeral 8 designates the roll table at one side of the mill and 9 asimilar roll table at the opposite side of the mill. Each of thesetablesis carried by stirrups or saddles 10. The stirrup at the outer endportion of each table is suspended by means of two links 11, which areconnected at their upper ends to lateral extensions 12 (see Fig- 5) ofone arm of a bell crank lever 13. Each of these bell crank levers ispivoted upon a transverse rod or shaft 14, which is carried uponvertical posts 15, having braces 16 conconnected at its lower endportion with the plunger 23 of a hydraulic cylinder 24. These twocylinders are formed in a. housing head block 25 (shown in detail inFigs. 16 and 17). The two cylinders 24 have their plungers extending inopposite directions, each plunger being connected to the arm 22 of oneof the shafts 20. Each of said shafts also preferably has rigidlysecured thereto a crank arm 26, these two crank arms being connected bya link 27 (see Figs. 2 and 4) whereby the action of the two cylinders 24is equalized.

Each of the suspension links 11 has a pivotal connection 28 at its upperend with one of the bell cranks 13 or 19, and at its lower end has auniversal jointed connection at 29 with the stirrup or saddle 10. Theseuniversal jointed. connections may be of any desired character. @ne formof such conneotion' is shown in detail in Fig. 9. In this figure, thelinks 11 are shown as having loops 30 at their lower ends, the openingsof which loosely engage the portions 31 of the stirrupsor saddles.

Each pair of hell cranks 13 and 19 is connected by a link 32. i

From the foregoing description and from the drawings, it will beapparent that each of the roll tables is suspended by four links fromone pair of the connected bell cranks 13 and 19, and that the two setsof bell cranks are actuated in unison by the cylinders 24., to raise orlower the tables so as to bring them into proper position with respectto the passes between either the top and middle roll or between themiddle and bottom roll.

The roll tables are preferably made narrower than the length of themiddle rolls and are arranged to he shil ted laterally in the directionof the transverse axes of the middle rolls in the manner presentlydescribed. Each table is also provided with the guides 33 and 34. Eachof the guides 33 is mounted for lateral movement rela tively to thetable and toward and away from the guide 34. For this purpose, each ofthe guides 33 is provided with carriage portions 35, preferably providedwith rollers 36 (see Fig. 10) these rollers being arranged to travel onthe transverse guide 37. The guides 34 are fixedly secured to the tableto move therewith. The outer ends of the guides 37 may be braced, asindicated at 37.

For the purpose of-shifting the tables laterally and for moving theguides 33 relatively to the rolls of the table, 1 provide the mechanismnow to be described.

Connected to each table by means of universal joints 38 (see Fig. 9) aretwo laterally extending rods 39, which at their opposite ends are eachconnected to the hub portion 40 of a bell crank lever 41, (see Figs. 5,21 and 22). Each bell crank lever 41 is pivoted at 42 upon one arm of atriangular lever 43, which, in turn, is fulcrumed at 44 on a supportingbracket 45. Also mounted on the center 44 is a twoarmed lever 46, onearmof which is connected by a link 47 with'one of the arms of the bellcrank lever 41. Connected to the other arm of each bell crank lever 41is a link rod 48 which, at its opposite end, is connected by a universaljoint 49 with one of the carriages 35 of the guide 33. All thetriangular levers 43 are connected into a continuous system by a systemofconnecting rods 50, and all the arms of the two armed levers 46opposite the link connections 4'? are similarly connected by a system ofrods The rods 50 are connected at one end to a yoke 52, which isactuated by the plunger of a power cylinder 53, and at the opposite endare similarly connected to a yoke 54. actuated by a plunger of the powercylinder 55. In a similar manner, the rods 51 are connected at one endwith a yoke 58, actuated by the plunger of the power cylinder 57, and atthe opposite end to the yoke 58, actuated by the plunger of the powercylinder 59. The general arrangement of this system and of its actuatingcylinders is best shown in Fig. 1. The cylinders 53, 57 and 59 aresingle-acting cylinders. By admit-"ting power to the cylinder 53 or tothe cylinder 55, the triangular levers 43 will all be rocked in unisonon the center 44 in one direction or the other. according to whichcylinder is operated. This actuates the connecting rods 39 and 48 tosimultaneously move the table and its guide 34 and also the guide towhich the rods 48 are connected. In this movement, the bell crank levers41 move with the triangular levers 43, on which they are mounted. Powermay also he admitted to either cylinder 57 or 59, to thereby rock thelevers 46 on the centers 44, and thereby. through the connections 4? andbell cranks 41, adjust the guides 33 with respect to-the guides 34.

60 designates a counterbalance cylinder which is preferably connected toat least one of the triangular levers 43 for the purpose of steadyingthe movement of the system. This cylinder is shown in Figs. 1 and 5. Itis swiveled on a vertical axis at 61 so as to adapt itself to themovements of the said lever. For the purpose otsteadying and guiding thetables in their lateral movements, each table is preferably providedwith a radius bar 62, swiveled at one end to the table at 63, and havinga balland-socket connection at its opposite end at 64 with a suitablesupporting post 65, set in the ioundation of the mill.

The numeral 66 designates a manipulator shaft which is journaled inbearings 67 onthe roll table 8. This shaft has a plurality of crank arms'68, toeach of which is pivoted at 69 a manipulator finger 70 (see Figs.

a the guide 34. In their normal lowered-posiate the bell cranklever 75and rock the tions, they are in the positions shown in full lines inFigs. 11 and 12, their free end portions lying underneath and inposition to catch and turn the blank or workpiece X (Fig.12) which isbeing rolled and which is between the guides 33 and 34.

The shaft 69 is operated as followsz It is provided with a crank arm 73(Figs. 5 and 12), to which is) jointed the lower end of a connecting rod'74, whoseupper end is connected to one arm of a bell crank lever 7.5,which is fulcrumed at 76 to one arm of one of the .bell crank levers 19,above described. The other arm of the bell crank lever is connected bylink 77 with one arm .of a lever 78, which is looselv fulcrumed on theshaft 20, before described (see Fig. 151). The other arm of-the lever 78is connected by a link 79 with the plunger 80 of a power cylinder 81,which is -also formed in or carried by the head block housing casting25, before referred to.

When power is admitted to this cylinder 81, the lever 78 is therebyactuated to actumanipulator shaft 66. As the shaft 66is rocked, thecrank arms 68 are moved from the positioushown in full lines to theposition shown in dotted lines in Fig. 12, there-.

by carrying the manipulator fingers forwardly and upwardly through theslots .in

the guide 3-1, and by'reason ofthe engagements of the heel portions ofthese fingers with the shaft 66, the fingers are caused to move upwardlyas. they are moved forwardly, thereby actuating and turning the workpiece. When the action of the cylinder 30' i reversed, the fingers aremoved back to-the position shown in full lines in Fig. 12.

Inasmuch as the bell crank 75 is carrie by one of the bell cranks 19,the relation of the parts is not changed in a manner to affect theoperationof the shaft 66 when the table 8 is raised or lowered. The movement of the manipulatorfingers described is an exceedingly simple andeifectiveone, by reason of the provision of the fulcrums at their heelportions against the shaft 66,

which gives them a powerful lifting and turning action. I

The roll tables may be of any suitable or usual construction. shown themanner in which the rolls may be journaled. One of these table rolls isshown t 82, and is secured to an overhung spindle 83, supported inbearings 84, and driven by In Fig. 11, I have.

suitable gear connections with an elec tric motor-86. 87 indicates awater-cooling inders for raising and lowering the table,

for shifting the middle roll, for actuatin the manipulator fingers, andfor the roll counterbalance may be carried or contained in this headblock.

The numeral 92 designates the usual screw-down mechanism for the rolls,which may 'be actuated in any 'usual or suitable manner, as bythe shaft93, driven by the motor 94.

The numeral 95 designates the driving spindles for the rolls 3, 4 and 5.I preferably provide a system of supporting cylin vders for thesespindles, this system also providing means whereby the angle of thespindles may be shifted to suit the adjustment of the rolls; Thissupporting system is shown generally in Fig. 3, and some of the detailsthereof are shown in Figs. 18, 19 and 20. Each spindle 95 is providedwith a'yoke 96, in which it rotates, having laterally projecting studsor trunnions 97, which engage the. bearings in the upper ends of thepiston rods 98 of the hydraulic cylinders 99. Two of these rods are 'provided for the yoke of each of the-upper and middle spindles 95, each rodhaving its own actuating cylinder 99. The lower spindle which, in turn,is carried by thepiston 101 of a power cylinder 102.

My invention provides asystem'of floating tables which are capable ofbeing readily 95 has its'yoke 96 carried by a saddle 100,

shifted vertically into the desired positions relative to the rollpasses and in which .the supporting and actuating parts are carriedlargely on the main housings 'of the mill. It also enables the use ofrelatively narrow tables, which can be shifted laterally as well asvertically, together with a simple and efficient arrangement of guidesand manipulators which can be readily controlled and actuated. p

I do not desire to limit myself to the particular construction,arrangement and combination ofparts which I have herein shown and"described, since it will be obvious that various changes may be madetherein, without departing from the spirit and scope of my invention asdefined inthe table,

porting the tables and the actuating connections therefor may be widelyvaried. The tables themselves may be constructed in various ways, andvarious other changes may ,be made in the different details.

ing mechamsm for moving the table, said mechamsm also having means formoving the movable guide simultaneously with the table, substantially asdescribed.

'2. In a rolling mill, a roll table supported for lateral movement, arelatively fixed guide carried by the table, another guide movableindependently of the table toward and away from the fixed guide, andactuating mechanism for moving the table, said mechanism also havingmeans for moving the movable guide simultaneously with the together withactuating connections whereby the movable guide may be shiftedindependently toward and away from a relatively fixed guide,substantially as described.

3. In a rolling mill, a roll table supported for lateral movement, arelatively fixed guide carried by the table, another guide movableindependently of the table toward and away from the fixed guide, andactuating mechanism for moving the table, said mechanism also havingmeans for moving the movable guide simultaneously with the table,together with actuating mechanism connected with said means forindependently shifting the movable guide toward and away from the fixedguide, substantially as described.

4:. In a rolling mill, a roll table supported for lateral movement, arelatively fixed guidecarried by the table, another guide movableindependently of the table toward and away from the fixed guide. andactuating mec anism for moving the table and also for moving the secondnamed guide either with the .table or independently thereof, saidactuating means being at one side of the table and supportedindependently thereof, substantially as described.

5. In a rolling mi 1, a roll table supported for lateral movement, arelatively fixed guide carried by the table. another guide movableindependently of the table toward and away from the fixed guide. a leversystem having actuating connections with the table, another lever systemhaving actuating connections with the movable guide and connected withthe first named system to be actuated thereby and also to operateindependently thereof, and separate motive devices for the two systems,substantially as described.

6. In a rolling mill, the combination with a roll table suspended toswing laterally from overhead points of support, and a relatively fixedguide carried by the table, of another guide movable independently ofthe table toward and away from the first named guide, and actuatingmechanism for moving the table, said mechanism also having means formoving the movable guide simultaneously with the table, substantially asdescribed.

7 In arolling mill, the combination with a mill table supported forlateral movement and having guides both of which are movable with thetable and one of which is mounted for independent movement toward andaway from the other guide, of actuating connections for the table andfor the last named guide, motive means for simulta neously actuating theconnections of both the table and the independently movable guide, andother motive means for separately actuating the connections of theindependently movable guide, substantially as described.

8. In a rolling mill, the combination with a roll table suspended toswing laterally from overhead points of support, a rela tively fixedguide carried by the table, of-

another guide movable independently of the table toward and away fromthe first named guide, and actuating mechanism for moving the table andalso for moving the movable guide simultaneously with the table and alsoindependently thereof, substantially as described.

9. In a rolling mill, the combination with a table mounted for lateralmovement and havin a pair of guides movable therewith, one 0 said guidesalso having an independ ent movement and the other of said guides beingstationary relatively to the table, of a lever system having actuatingconnections with the table and also with the independently movable guideand having means whereby the table and both guides may be shiftedsimultaneously or the independently movable guide may be independentlyshifted, substantially as described.

10. In'a rolling mill, the combination with a table mounted for bothlateral and vertical movements, of guides and manipulator mechanismmovable with said table, said manipulator mechanism having means forturning thework-piece on the table between the guides, substantially asdescribed.

11. In a rolling mill, the combination with manipulator having mechanismmovable with said table, said manipulator mechanism having means forturning the work-piece on the table between the guides,.one of saidguides also having an independent movement, substantially as described.

12. In a rolling mill, the combination with a laterally movable table,of a manipulator carried by said table and movable therewith, saidmanipulator having means for turning thework-piece on the table, andmeans for actuating the manipulator in the'difi'erent adjusted positionsof the table, substantially as described. v i

' 13. In a rolling mill, the combination with a table mounted iorthothlateral and vertical movements, by said table and'movable therewith,said manipulator having means for turning the ingot upon the table, amotive device supported independently of the table, and actuatingconnections between said motive device and the manipulator, saidconnections permitting the operation of the manipulator in the difl'erent adjusted positions of the table, substantially as described.

14. In a rolling mill, the combination with a table mounted forboth'lateraland vertical movements, of a manipulator carriedby saidtable and movable therewith, said means for turning the ingot upon thetable, a motive device ported independently of the table, and actu atingconnections between said motive device and the manipulator, saidconnections of a manipulator carried .for suspending suppermitting theoperation of the manipulator'in the table, the table having a relativelyfixed guide at one side of the manipulator, and a movable guide at theother side of the manipulator, and actuating connections whereby themovable guide may be moved with the table and also independently of thetable toward and away from the relatively fixed guide,substantially asdescribed.

15. In a rolling mill, an overhead supdifierent-adjusted positions ofthe port, a table suspended from said support I for both vertical andlateral movement relative to the rolls, lever members from which thetable is suspended, manipulator mechanism carried by the table, and amanipulator-actuating member carried by one of said lever members,substantially as described.

16. In a rolling mill, a mill table, means said table whereby it may bemoved both laterally and vertically, actuating connections for effectinga lateral shifting of the table, other actuating connections forefi'ecting a vertical shifting of the table, and'manipulator mechanismmounted on the table and movable therewith, said manipulator havingmeans for turning the work-piece on the table, together with separateactuatmg mechanismifor actuating the manipula- JULIAN KENNEDY.

